Four-wheeled motorcycle



FIG. 1 is a perspective view of a four-wheeled motorcycle showing my newdesign;

FIG. 2 is a right-side elevation view thereof;

FIG. 3 is a left-side elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front elevation view thereof; and

FIG. 6 is a back elevation view thereof.

The ornamental design for a four-wheeled motorcycle, as shown.